closed contract. Whose terms constitute the entire agreement between the contracting parties and no clause or provision can be changed or modified without mutual consent. An insurance contract, for example, is a closed contract whereas a construction contract may not be one. See also open contract.
The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force. The volt is named in honour of the Italian physicist Alessandro Volta (1745â1827), who invented the voltaic pile, possibly the first chemical battery.
Voltage (volts) is the pressure between a negative and positive charge. Current (amperes) is the amount of electrons moving from one point to the next I like to compare the whole thing to water flowing thru a garden hose. What direction the water flows, at what pressure and how much.